Vacuum-creator.



E. M. BARNES.

VACUUM CREATOR.

APPLICATION FILED NOV. 4; 1912.

Patented Sept. 7, 1915.

awuewtoz I UNITED s'rAriis oF IcE.

EDWARD IVI. DAR-nus, or HASTINGS, MICHIGAN. ASSIGNOR TO ADVANCE MFG. 'c o., or

. HAsrmesfMIoHmaN.

VACUUM-CREATOR.

Be it known that I, 'llowAim M. liiuixiis, a. citizen of the llnited States, residing at Hastings, i\lichiga n, have invented certain new and useful Improvements in Vacuum-v "(lreators, of which the following is a specito providein-a vacuum creator, an iin-' provedsuction fan structure.

Further obje('t s,.and' objects relating to structural details, will definitely appear from the detailed description tofollow.

'I, accomplish the: objects of niy'invention by the devices and means described in the following specification.

The invention is clearly ,delined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing forming a part of this specification, in which:

Figure I is a perspective view of a structure embodying the features of my invention, a portion of the handle being broken away. Fig. II is an inverted view of the structure appearing in Fig. I, the dust bag a being omitted. Fig. III is a detail vertical central transverse section. Fig. 1V is a horizontal section'through the fan, on a plane corresponding to line 4-4 of Fig. III. Fig. V is a detail section through the'delivery nipple of the fan casing, on a plane corresponding to line of Fig. III. Fig. VI is a detail section on a plane corresponding to line 66 of Fig. I. Fig. VII is a detail section on a Vplane corresponding to line 77 of Fig.

In the drawings, similar reference characters refer to'similar parts throughout the 1 several views, and the sectional views are taken looking 'in the direction vofthe little arrows at the ends of the section lines.

Referring to the drawing, the base or shoe 1 is preferably cylindrical as shown and comprises a circular plate provided with a downwardly projecting flange 2 at its edges.

Specification ofLetters Patent.

Patented ea. 7, 1915.

Application filed Noven1bei'4,1912.- Serial No. 729,240. 7

The lower edge of the flange is turned outwardly and thence back upon itself to provide a tread 3. This shoe is deseribed'in detail and claimed in my application for vided with lugs 7 which are struck therefl'Ull],-S(50 Fig. VI while the offsets 6 of the sections 5 are provided with seats 8 for the lugs-. As the sections are forced together, the lugs 7 snap into their seats. If desired, in order to insure an air tight joint between the sections 4 and 5, some sealing material may be used in the be readily understood. a

To afford an effective means of attaching the handle 9 and to reinforce the parts and connect the shoe 1 with the fan casing, I interpose a plate 10 between the base and the fan casing. f See Fig. III.

Thcshoe plate and the bottom. section 4 of the fan casing are connected hy bolts 11. The shoe and the bottom member of the'fan ings 19 in the plates. This provides a' very light fan structure and at the same time, one which is strong and rigid. The upper plate 15 is provided with a nut 20 which is threaded into the internal threaded flange 21 formed in the top plate. The shaft 22 is arranged through a bearing 23 mounted on the top section of the' fan casing.

joint as will 85 casing and the plate 10 are provided with The fan thus constructed, is not likely to become clogged and should a string or thread become entangled therein it is easily disengaged. Further, the fan is very light and at the same time is of large capacity.

The fan casing-sections 4 and 5 are provided with integral nipple extensions 2-1 and joined together in themanner described, that is, the joint offsets 6 of the upper section are extended into the nipple extension 25 to receive the edges of the lower extension. A ferrule or sleeve 26 is slipped over these nipple extensions, the ferrule being provided with channels 27 on its sides adapted to receive theseams formed by the joints of the sections. as a lock for the fan casing sections and further is provided with a flange 28 atits outer end over which the mouth of the dust bag 29 is arranged. The shaft 22 is driven by a suitable electric motor. arranged in the casing 30. '1'. preferably use' the motor structure described in Patent, #1,034,408, dated Aug. 6, 1912.

By forming the parts as I have illustrated and described, they may be produced by drawn or dieswork' and each is so formed that the structure is very compact and light 7 "in -weight. Each section of the casing is,

owing-to itsshape, reinforced so that while light material is used, the casing is very strong andrigid'. The pan-like shape of the fan casing sections d and 5 and their joints I claim as new and desire to secure by Letr ender these parts very rigid.

Having thus described my invention, What I ters Patent is:

1. In a structure of the class described,

the combination of a fan casing chamber consisting of a pair of sheet metal pan-like sections, the upper section being inverted upon the lower, said sections being provided 5 with integrally formed registering delivery nipple members at one side, the lower sec-' tion being provided with joint lugs, the edge of the upper section being shouldered downwardlyto receive the edge of the lower and being provided with seats for said lugs; anda ferrule sleeved upon said delivery nipple .members of said fan casing sections, said ferrule having opposed grooves adapted to receive the shouldered portions of said upper section, said ferrule and lugs and their coacting seats coacting to secure the said casing sections together.' I i I 2. In a structure of the class described,

the combination of a fan casing chamber consisting of a pair of sheet metal pan-like sections, the upper section being inverted upon the lower, said sections being provided with integrally formed registering delivery nipple members at one side, the edge of the upper section being shouldered downwardly to receive the edge of the lower; and a ferrule sleeved upon .said delivery. nipple This ferrule serves members of said fan casing sections, said ferrule having opposed grooves adapted to receive the shouldered portions of said upper section.

3. In a structure of the class described, the combination of a fan casing chamber, consisting of a pair of sheetmetal pan-like sections, the upper section being inverted upon the lower, said sections being provided with integrally formed registering delivery nipple members at one side, the lower section being provided with joint lugs, the edge of the upper section being shouldered downwardly to receive the edge of the lower and being provided with seats for said lugs.

4. In a structure of the class described the combination of a pair of sheet metal pan-like sections, the upper section being-;

inverted upon the lower, said sections being provided with integrally formed projecting delivery nipple members at one side; and a ferrule sleeved upon said" delivery nipple members of said fa'n'casing' sections and constituting a member for securing said sections together, said ferrule being adapted to receive the neck of a dust bag.

5. In a structure of the class described, the combination of a cylindrical fan casin chamber comprising a pair of sheet meta facing pan-like sections having telescoping engagement, said sections being provided v with integrally formed tangentially disposed registering delivery nipple members, one of said sections being provided with lugs and the other with seats for said lugs; and a ferrule sleeved upon said delivery nipple members of said fan'casing sections, said ferrule and lugs and their coacting seats coacti'ng to secure the said casing sections together.

6. In a structure ofthe class described, the

combination of a cylindrical fan casing chamber-comprising apair of sheet metal facing pan-like section having telescoping engagement, said sections being provided with integrally formed tangentially disposed registering delivery nipple members, one of said sections being provided with lugs and the other with seats for said lugs, coacting to securethe parts together.

7. A structure I of iln- (lass described, comprising a fan casing having a discharge opening at one side and a central inlet opening in its. bottom; fan consisting of an upper and a lowerplate, the lower plate being protlii-eaded"upon said shaft, whereby sai fan Ill is supported with the opening in said bottom plate thereof above and in close proximity to the inlet opening'of said fan casing.

8. A structure of the class described,

5 comprising a fan casing having edischarge opening at one side and a central? inlet opening in its bottom; a fan consisting of an upper and a lower plate the lower plate bein provided with a central opening; 10 plate-like blades arranged between said plates,vthere being a space between the inner edges of the blades; a vertically disposed' shaft; and a not carried by said top plate threaded upon said shaft, whereby said fan is supported-with the opening in said bot' tom plate thereof above and in close proximity to the inlet opening of said fan easing. In witness whereof, I have hereunto set my hand and seal in the presence of two witnesscs.

EDVAR'D M. BARNES. \Vitnesses M. PHJNA \VoonnUi-w, \PEARL E. LILLIE. 

